Removing default image size list in Media Box

Question

I trying to remove unused image size (Thumbnail, Medium, Large) in MediaBox

Any function can i use in functions.php ? or some trick ?

PS : I know i can use jQuery trick but any better function to use ?

Answer 1

Exactly the same code as Mridul, but different filter:

function wp_70048_remove_image_sizes($sizes) {
    unset($sizes['thumbnail']);
    unset($sizes['medium']);
    unset($sizes['large']);
    return $sizes;
}
add_filter('image_size_names_choose', 'wp_70048_remove_image_sizes');

Tested with WP 3.4.2

Answer 2

function remove_default_image_sizes($sizes) {
    unset($sizes['thumbnail']);
    unset($sizes['medium']);
    unset($sizes['large']);
    return $sizes;
}
add_filter('intermediate_image_sizes_advanced', 'remove_default_image_sizes');